wireless networks: Allow exporting configuration into WPA supplicant format

Signed-off-by: Michael Tremer <michael.tremer@ipfire.org>

diff --git a/src/functions/functions.wireless-networks b/src/functions/functions.wireless-networks
index 1d39bcda74cc83c5286e186d5d124dded3cf30f5..aaf7cb331eece5807be16be844d56f45fa43784f 100644 (file)
--- a/src/functions/functions.wireless-networks
+++ b/src/functions/functions.wireless-networks
@@ -56,6 +56,22 @@ cli_wireless_network() {
        esac
 }
 
+wireless_network_list() {
+       list_directory "${NETWORK_WIRELESS_NETWORKS_DIR}"
+}
+
+wireless_network_list_ssids() {
+       local handle
+       for handle in $(wireless_network_list); do
+               local ${WIRELESS_NETWORK_CONFIG_SETTINGS}
+               if ! wireless_network_read_config_by_handle "${handle}"; then
+                       continue
+               fi
+
+               print "${SSID}"
+       done
+}
+
 # This function writes all values to a via ${ssid} specificated wireless network configuration file
 wireless_network_write_config() {
        assert [ $# -ge 1 ]
@@ -116,21 +132,25 @@ wireless_network_write_config_key() {
        return ${EXIT_OK}
 }
 
-# Reads one or more keys out of a settings file or all if no key is provided.
 wireless_network_read_config() {
-       assert [ $# -ge 1 ]
-
        local ssid="${1}"
-       shift 1
-
-       local ssid_hash="$(wireless_network_hash "${ssid}")"
-       assert isset ssid_hash
 
        if ! wireless_network_exists "${ssid}"; then
                log ERROR "No such wireless network : ${ssid}"
                return ${EXIT_ERROR}
        fi
 
+       local handle="$(wireless_network_hash "${ssid}")"
+       wireless_network_read_config_by_handle "${handle}"
+}
+
+# Reads one or more keys out of a settings file or all if no key is provided.
+wireless_network_read_config_by_handle() {
+       assert [ $# -ge 1 ]
+
+       local handle="${1}"
+       shift
+
        local args
        if [ $# -eq 0 ] && [ -n "${WIRELESS_NETWORK_CONFIG_SETTINGS}" ]; then
                list_append args ${WIRELESS_NETWORK_CONFIG_SETTINGS}
@@ -138,10 +158,10 @@ wireless_network_read_config() {
                list_append args "$@"
        fi
 
-       local path="${NETWORK_WIRELESS_NETWORKS_DIR}/${ssid_hash}/settings"
+       local path="${NETWORK_WIRELESS_NETWORKS_DIR}/${handle}/settings"
 
        if ! settings_read "${path}" ${args}; then
-               log ERROR "Could not read settings for wireless network ${ssid}"
+               log ERROR "Could not read settings for wireless network ${handle}"
                return ${EXIT_ERROR}
        fi
 }
@@ -338,3 +358,111 @@ wireless_network_priority() {
                return ${EXIT_ERROR}
        fi
 }
+
+wireless_networks_to_wpa_supplicant() {
+       local ssid
+       for ssid in "$(wireless_network_list_ssids)"; do
+               wireless_network_to_wpa_supplicant "${ssid}"
+       done
+}
+
+wireless_network_to_wpa_supplicant() {
+       local ssid="${1}"
+
+       local ${WIRELESS_NETWORK_CONFIG_SETTINGS}
+       if ! wireless_network_read_config "${ssid}"; then
+               error "Could not read configuration for ${ssid}"
+               return ${EXIT_ERROR}
+       fi
+
+       local auth_alg
+       local group
+       local key_mgmt
+       local pairwise
+       local proto
+
+       case "${ENCRYPTION_MODE}" in
+               # Normal WPA
+               WPA-PSK)
+                       auth_alg="OPEN"
+                       key_mgmt="WPA-PSK"
+                       proto="WPA"
+                       pairwise="CCMP TKIP"
+                       group="CCMP TKIP WEP104 WEP40"
+                       ;;
+
+               # WPA with stronger algorithms
+               WPA-PSK-SHA256)
+                       auth_alg="OPEN"
+                       key_mgmt="WPA-PSK-SHA256"
+                       proto="WPA"
+                       pairwise="CCMP TKIP"
+                       group="CCMP TKIP WEP104 WEP40"
+                       ;;
+
+               # Normal WPA2 (802.11i)
+               WPA2-PSK)
+                       auth_alg="OPEN"
+                       key_mgmt="WPA-PSK"
+                       proto="RSN"
+                       pairwise="CCMP TKIP"
+                       group="CCMP TKIP WEP104 WEP40"
+                       ;;
+
+               # WPA2 with stronger algorithms
+               WPA2-PSK-SHA256)
+                       auth_alg="OPEN"
+                       key_mgmt="WPA-PSK-SHA256"
+                       proto="RSN"
+                       pairwise="CCMP TKIP"
+                       group="CCMP TKIP WEP104 WEP40"
+                       ;;
+
+               # WEP
+               WEP)
+                       auth_alg="SHARED"
+                       wep_key0="${key}"
+                       wep_tx_keyidx="0"
+
+                       # Reset PSK.
+                       psk=""
+                       ;;
+
+               # No encryption. DANGEROUS!
+               NONE)
+                       auth_alg="OPEN"
+                       key_mgmt="NONE"
+                       ;;
+       esac
+
+       print_indent 0 "# ${SSID}"
+       print_indent 0 "network = {"
+       print_indent 1 "ssid=\"${ssid}\""
+       print
+
+       # Authentication
+       print_indent 1 "# Authentication"
+       print_indent 1 "auth_alg=${auth_alg}"
+       print_indent 1 "key_mgmt=${key_mgmt}"
+
+       case "${ENCRYPTION_MODE}" in
+               WPA*)
+                       print_indent 1 "proto=${proto}"
+                       print_indent 1 "pairwise=${pairwise}"
+                       ;;
+       esac
+
+       # PSKs
+       case "${ENCRYPTION_MODE}" in
+               WPA*PSK)
+                       print_indent 1 "psk=\"${PSK}\""
+                       ;;
+               WEP)
+                       print_indent 1 "wep_key0=\"${PSK}\""
+                       print_indent 1 "wep_tx_keyidx=0"
+                       ;;
+       esac
+
+       print_indent 0 "}"
+       print
+}